I did the R28 mod to my re-issue Phase 90 last night. Has anyone tried this? It is supposed to make your re-issue phase 90 sound more like a scipt model phase 90 that Eddie used in the 70's. I just clipped a little wire and that was it. It seems to even the sound out more and gives it less boost. They say the re-issues would clip and be distorted and this little mod takes care of that. I noticed a little change and it's really easy.
I have an original flanger and my buddy has a re-issue and I think the original is much better. So if you want one you'll have to pay for it. I got mine for $30 because the switch was bad in it. I knew what was wrong so I fixed it and it works great. But they are expensive and hard to find.