Any suggestions for a grip for a Mamiya 645E? I have the rapid winder but removed it after having way too much trouble with it. After the 3rd roll of film the film advance knob got stuck thanks to the useless rapid winder. The 645E was only about 3 months old so I sent it to Mamiya with the winder. They cleaned the camera out, did CLR, and returned it to me. I threw the rapid winder in a box and have had no problems with the 645E since then. The problem is that I find it rather uncomfortable to hold the little box-shaped 645E without a grip. I tried using the grip I have for my 645J, but it won't press the shutter release button. I would like a grip like the one for the 645J that would permit me to press the shutter release button on the grip. I thought about getting another grip like the one that the 645J has and modifying it myself so it can press the shutter release button, or I could just cut off the little metal tab that is supposed to press the shutter button and just use the grip without the trigger function. Any suggestions?