RE:Front Loading Gasket Thickness Question

I just front loaded a 212 cab with a Retro 30 and a Reaper HP. The Reaper has the WGS issued gasket. On the Retro 30 I used an aftermarket gasket that is significantly thicker. More like a quarter inch... Will this be a problem? Will it cause phase issues? Other problems with the sound??

Ideally, I would like to have them both the same. But if it doesn't really matter, I won't sweat the details. 

Please advise. 

thx!

No problem at all...