Your clutch plate may be jammed into the splines of the T-5. You really need to read ALL the how-to stuff (check Inliners.org site). My buddy had the same problem with the splines, had to take his grinding disc and elongate each spline, so the disc has room to move. Also you could have made a spacer to eliminate all this stuff, but now that youve trimmed the input shaft you'll need to address the spline issue. Also I'd pull the trans, then re-install without the pressure plate and get under there and scope out just what's going on.
Best of luck
