Hello, I’m getting back into recording and writing heavy music, and am Thinking about upgading a couple of old 7s. They sound a little rough, but have been with me for decades and mean a lot to me. I’d like to do them some justice and get their best tone, and get rid of all the noise. The first started as an MIJ Ibanez RG7420. Since it was an early model it came with a 7620 neck! When the basswod body cracked at one of the trem studs, I ordered an Ibanez 7string AANJ replacement from Perle Guitars on Ebay (poplar body). This required a trem upgrade so I swung for the fence and ordered a new old stock Floyd from Germany. I don’t remember the model but it was very expensive and heralded as one of the best Floyds that fit the trem cutout on this body. The tone is better with the new body (stained and wipe on poly finish) and the new trem. More clear, less mushy and a great mid-range boost (helps get a hint of that Bloodbath/At The gates buzz saw tone). It still has a hint of buzz on high gain and the 5 way switch is noisy. The pickups have aged nicely, and while a little squelchy, they have some great character through a tube amp. If I replace them I am thinking of going with the Duncan Mark halcomb Alpha and Omega 7s. What 5-way switch and pots would you recommend for these? Should I foil wrap the cavity, and any grounding/bonding tricks to quiet the 60hz buzz? The second is a De Armond S67 (7-string SG copy). It’s a turd and makes a terrible crackle on high gain, but the tone this thing can carry... huge!!! I don’t think my Les Paul could match it even if it could do drop A. Should I foil wrap this one and upgrade the scratchy pots and 3-way switch only, or should I ditch the pups that may have developed nicely over the years??? Hard to gauge the tone with so much crackle and buzz... I can solder and am handy with a meter so any help is appreciated!