R32 Gts4 Something Not Right. Clutch-Front Driveshaft-? Shudder Noise

[joe blo]

hi gots got a r32 gts4 with rb25det in it. a problem has come up. has a button clutch. you know how sometimes you let them out slow and you get that shudder? it sounds like that but does it when driving and stuff (going heavy on the accelerator to make it hit the driveline hard to try determine where noise is coming from)

has a npc bigmouth track clutch i put in.

i jacked up the front to try replicate the noise. rear driveshaft is fine, no play. front driveshaft could possibly produce the noise, problem there is that im running it in 2wd via a switch so wouldnt think that would do it.

had it narrowed down in my head to those things but have noticed it driving down a gutter when clutch conditions wouldnt have made the sound i wouldnt have thought.

give me some things to try please

NOTE- atessa system hasnt been rebled after clutch change. just been in 2wd since then

thanks guys