I just ordered a set Volk GT-S's and it looks like the 90 degree iForged adapters should work fine. Here's a thread I found on installing those $35 bracket adapters
Finally, TPMS Solution for Multi-piece wheels (maybe others) - RX8Club.com
I wonder why your installer had issues with the screw. I'm going to get the 90 degree iForged ones and use those. I would think with or without valve stem caps, it shouldn't matter.
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SOLD 12/30/2011 2010 370Z Coupe Monterey Blue 6MT/Touring/Sport/Nav
F.I. CBE CF w/ 12" Res | V1 | SecondSkin | Stillen G3 | EVO-R CF B-Pillars | Volk GT-S Ti Gunmetal 19x9.5 +30 F, 19x10.5 +8 R | Swift Spec-R Springs
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