I want to start modding my stock JTM45RI and do as much of the work myself. I want to start by changing the caps to 32X32uF and 16X16uF and then later add a Metro board.... The only thing that is preventing me is a lack of experience draining caps. However, I recall a thread just before the crash where John Phillips mentioned that on Marshall's, one can drain the caps easily using the power switch. I think, if the amp is on, standby is off, and I turn the power switch off then the current will drain through the tubes? Can someone advise me if this is the correct procedure? Also I intend to get a decent Fluke. If someone would be kind enough to also let me know the proper way to measure DC in the caps that would be much appreciated. Thanks. I promise I will keep one hand in my pocket.