So my dad has a GG6 and the 6" backplate it comes with has a washer in it. I bought a Griot's 5" vented backing plate for my MT300. It did not come with a washer. Is it going to work better on curves if I used a washer with the vented back plate for the MT300?
Also, if my dad uses the 5" vented backplate, he should use the washer that came with 6" backplate the DA came with?
Also, if my dad uses the 5" vented backplate, he should use the washer that came with 6" backplate the DA came with?