Greetings. I have a1984 DRG C+ and have been tweaking the tone stack caps. Haven't replaced any yet although i have two micas for the treble and treble shift and the other 715P's drops . Question: when inside, i removed the old silicone that bound the two 250pf and 750pf's and straightened them upright. With that little thing, the amps tone has changed for the better. Was that silicone that important? I know that it was put there to help reduce vibrations and microphonics. Will the new micas make a big difference?And O drops? A little undecided. Thanks for your time, Jim