Need Advice! My Helmet Hits The Roll Cage!

My rally roll cage was built by one of the best FIA-spec cage builders in the business. However, after installing my seat, in the exact same position the builder used, my helmet hits the roll bar padding. And it doesn’t lightly hit, it interferes; there is at least a 1/2″ overlap. I have no idea what to do! Any suggestions you have are very much welcome! Please help!

The Porsche 944 is a sports car manufactured by German automobile manufacturer Porsche from 1982 to 1991. A front-engine, rear-wheel drive mid-level model based on the 924 platform, the 944 was available in coupé or cabriolet body styles, with either naturally aspirated or turbocharged engines.
(Description courtesy of Wikipedia)

1987 Porsche 944 S

@speed_freak_g
https://www.instagram.com/speed_freak_g/

If you enjoyed this video, please subscribe:
http://www.youtube.com/subscription_center?add_user=powersports420