Personally...... I’d keep the converter “as is” and buy another. You’re already pleased with its street performance and for being tight the 60 might not be off too far. Once you pay for shipping + adjust if you want to back it’ll cost you twice. Too bad you’re not in my neighborhood. I had my 727 dialed in pretty good, but switched to 904 last year. I have 2 727 8” Ultimate’s sitting here one 5800, the other 6200 behind my W8 that’d we could throw in