Looking at the zkit2 page,
https://www.decware.com/newsite/zkit2.htm option 5 says:
"The AC buss of all 4 boards can ALSO be tied together putting both power transformers in parallel for even more headroom."
Steve,
Would this extra headroom from using two power transformers on one amplifier be a good option on any of your non kit amps - such as SE84 or SE34I ?
Brian