Yes Mike I have the older one. How many pads? Also what polish do you recommend? WG or Megs?
Ouch...
I've spent way too many years behind the first generation polisher....
If you have the first gen PC then do what you can to get some 5.5 CCS cutting pads, either yellow or orange, they both pretty aggressive.
As for compounds and polishes, the M105 or Ultimate Compound is a lot more aggressive than the Wolfgang TSR, TSR is a SMR while M105 and UC are true compounds.
SMR = Swirl Mark Remover, and this just means it's a lot less aggressive than a true compound.
I'd go for either the M105 or UC, both cut about the same. Wolfgang TSR finishes out really nice and it's so easy to use but if you need some major muscle then get a true compound.
As your pads become wet with product they won't want to rotate as well so it will be faster to switch out to a clean dry pad then try to limp along with a wet pad for any correction work. I documented this when buffing out a 1994 Corvette for Corvette Mike in SoCal, here's some pictures, count how many pads are next to my first gen PC
Here's a post I made recently here that talks about how many pads I used when using a FIRST generation Porter Cable as it didn't have the power to keep wet pads rotating under pressure.
WG TSR/FG & PC 7335 Technique
When I went to buff out a
1954 Corvette for
Corvette Mike I took lots of extra polishing pads because at that time the only DA style polishers available were the first generation polishers and I knew as my pads became wet with product they would stop rotating and the job would take longer. This car had an antique lacquer paint job on it so I didn't want to use rotary buffer but instead play it safe and use the PC.
I count 7 yellow polishing pads in the below picture, as one pad would quit rotating effectively I would swap it out to a clean, dry pad.
I have extensive before pictures documenting how horribly scratched, swirled and water-spotted the paint was on this car but here's a few after shots...
When I went to buff out a 1954 Corvette for Corvette Mike I took lots of extra polishing pads because at that time the only DA style polishers available were the first generation polishers and I knew as my pads became wet with product they would stop rotating and the job would take longer. This car had an antique lacquer paint job on it so I didn't want to use rotary buffer but instead play it safe and use the PC.
I count 7 yellow polishing pads in the below picture, as one pad would quit rotating effectively I would swap it out to a clean, dry pad.
I have extensive before pictures documenting how horribly scratched, swirled and water-spotted the paint was on this car but here's a few after shots...
I'm happy to say the Griot's ROP, the PC 7424XP and the new G110v2 have all over come this problem and can now easily keep most pads rotating under pressure even as they become wet with product.
That said, if the paint is neglected then you're be removing impurities and a little paint and your pads will get a build-up of spent product on them, so you'll want to clean your pads as you work around the Tahoe or switch to clean, dry pads.
To clean them you can use this technique,
How to clean your foam pad on the fly
Wash them in a bucket or in a sink and rinse them out
Get a pad washer and wash them on the fly
and here it is: 
