Putting out feelers - Holton BBb Sousaphone Valve Section

[gocsick]

My old Holton Collegiate is getting to the point where compression is poor even with heavy oil (the valves had plating loss and some pitting from before me owning it). I am thinking about trying to source a replacement valve section.. but given that I am not getting any younger maybe the better option is a lighter sousaphone. Anyway if anyone knows of one sitting in box somewhere let me know.

[York-aholic]

My old Holton Collegiate is getting to the point where compression is poor even with heavy oil (the valves had plating loss and some pitting from before me owning it). I am thinking about trying to source a replacement valve section.. but given that I am not getting any younger maybe the better option is a lighter sousaphone. Anyway if anyone knows of one sitting in box somewhere let me know.

I'm not completely up on Holton Collegiate sousaphones. What is the bore size?

[gocsick]

Published specs are 0.687"... I haven't actually gotten out the calipers for mine yet.