Does the shaft extend through the manifold at the back? Also, what is the ID of the manifold hole? It looks larger than the 1/2" OD of the 19/64 ID McMaster Carr drill bushing shown. I looked up the bushing in the catalog, but was thinking I could just get a 1/4" ID one from Ace Hardware and drill it to the proper ID. I just had it off last weekend but did not realize the throttle leak was my problem until after it was back together. I noticed it was loose, but seemed to be working properly. My idea is to just wire the valves open and epoxy the shaft ends to seal them temporarily till I have time or money to repair it properly or swap in a 4M40. I can get to the front fine, but the back will be a little tight and probably require removing the plenum and in that case might as well fix it properly. What are the implications of driving with the high idle 1500-1900rpm in P/N and 1000-1200 in D/R? It seems to drive fine otherwise, seems like less low end power with them wired closed, better overall power with them wired open. Thanks!