You've got a full keycap set from WASD, right?
WASD uses what most people call "OEM" profile, which matches the height of the stock keys from Filco, Ducky, etc.
All keys from TechKeys are "SP" profile, which are slightly lower and slightly more angled back.
From my experience, the QWERTY row of your WASD keys will match the F-row/Number-row of SP keys. Perhaps if you use the meth keys only for the Alpha-keys and shift them all down one row, they might fit a little better. Hope this helps.