I had some clutch issue's recently. I never had a problem until late last year. We found out what the problem was when Marren built me a new trans w LSD. The old bellhousing had an elongated hole. This caused just enough of a clutch miss alignment that I blew two clutches in a row. Ouch. I got him a junkyard case and we did a swap. Not a problem since.

Other than that I use the modular unit without any problems.