I don't know from bumblebee caps and RS kits and 50's wiring and all that. BUT, after 6 months with my I-35, I LOVE it, and think it is a major design success. It's breaking in and is becoming is a friend for life. But I did some little mods and thought I'd share: - I didn't like high end roll off on the stock volume pots/wiring. Collings since changed it on the new ones and sent some schematics to the dealers so they can retrofit it for any early buyers who want it. But I didn't know this. So in the meantime I had the original caps pulled and added treble bleed caps. - Then I didn't like the low end roll off! - Then I learned about the recommended rewiring that has NO rolloff of highs or lows. So we had to order the original caps from Collings and wait a few weeks (someone forgot before NAMM). -So we rewired it to new spec, AND installed Wolfetone DR. Vintage pickups at the same time. Here's what's new: - no appreciable eq change when volume pot is rolled down - the volume roll off, however, is pretty fast and strong. I like that. - when I have both pickups on, I can roll off one of the volume pots a little and I get very musical sounds that weren't there before, and which I prefer to either pickup by itself. - The Wolfetone pickups seem to have a more open, friendly mid thing happening. Just feels more musical. No dis on the Lollars, I'm putting them in another guitar. - the neck pickup is less BIG, so less muddy. I can use it more. - There is less squeal (like, none) Before, this guitar said to me, "This is NOT a single coil guitar! Play clean jazz, or crank up that Zendrive or Plexi! Otherwise, play a Fender." I didn't feel like there were shades of tone, clean, drippy, sweet, etc., at every gain level from clean to full on. Now I definitely do, with both pickups bended in different ways. I feel like I can pull subtleties out not unlike what I do with a strat and tele (of course it's a different sound, but the variery and subtlety is there), at very level of gain. When clean it sounds very acoustic-like and sweet, and cranked I can get that Robben Ford thing more easily (quack, chirp, sweet, cut). So I eq the amp to the neck pickup, roll the bridge tone down to 5-6 (most of the time), set the pickup toggle to "both" (most of the time), and mess with them there volume pots. If I want gain riding beyond what touch and technique will provide, I have to choose one pup and ride the V pot, but that's OK. The tone pots work great too. I had various late 60's, 70's and 80's Gibson's in the past, and I got decent pickups for them, but the pots/knobs were always USELESS. Now, with these pups, these pots, and this wiring, I can get a zillion musical shades. Plus MORE sustain and LESS feedback vs. a 335, and infinitely MORE depth and dimension. This guitar is now officially here for life. I'm interested in any comments and thoughts re: wiring, pots, etc for these kind of guitars, just out of curiosity. OH, BTW, I made the same wiring changes to my 290 (stock pickups), and got much the same results. As I understand it, if you have a recent Collings, it came this way. Do you new owners notice a fast and big volume rolloff?