Is this the one you're referring to?...............Tweak-7 Beta 2 Build 536
I've always had a little doubt about system optimizers as I've used some in the past and it's like you have to get out a stopwatch and the hack might shave two seconds of boot up or shutdown times.
I'll give it a try however and capture the changes using Regshot, then I can create a registry script from that.
I accidentally clicked the 1-click maintenance and I can't remember the first one for junk files , but it reported 249 invalid registry entries.
Will keep you undated.