My trumpet seems to be developing red rot on the receiver, right near where it meets the brace (or I hear it may be acid bleed). It doesn't seem to have spread to any other parts (except a smidge on the edge of the brace). Here's the thing, though. It's a Holton T602 of fairly modern vintage (how new? Serial's not even listed on the old Holton site). So do I... a) have the receiver replaced? b) Have the whole darn leadpipe replaced (which I hear can do wonders for sound)? c) Just replace the horn? I could probably find another on eBay for less than $200 or so. Mind you, I've only been playing for a year or so (and only about 6 months on this horn), so I'm only semi-attached to it. What say you, TM Elders?