Does anyone own the Bel Canto SET 40?

ponderguy, wondering if you could elaborate on improvements with your various cap replacements.

I am running an SETI40 as well. And for those interested the Psavane Acme 845s were a pretty substantial improvement for me over the 845b.

I owned the SET40 amp several years ago. Was my First amp using the 845 tube. 
it was a very hot running amp, you could smell the heat as any dust or anything got blasted with heat.. It was a bit wooly and "thick" sounding, the lows were somewhat muddy, but it had decent power and lots of bloom in the mid range. Too much volume and it all became loose and bloated sounding. 
I found it to be too "euphoric" sounding,  Overly tubey but easy to listen to when playing not so well recorded CD's at the time, about 20 years ago..  When I opened the unit up, there were some caps and resistors showing signs of heat related issues, burn marks, etc...  I liked the gold rings tube protectors, looked cool..  but it wasn't a keeper for me.. 

The original sound of the amp was very bass heavy and bloated like you said but replacing the 0.16uf with a 0.22 V-Cap CuTF transformed it totally. I also tried an Audyn Copper Max that sounded as good but richer with quite not so much detailed.

All my upgrades are doc’ed on the Art Of Sound forum, just subscribe and search for SETI 40