I bought some K40Y-9 caps for the "original" ST-35 and wondered if they are too big in diameter. The caps that come stock with the Dynakit are Illinois 0.1uF 630V which are 10.5mm dia. The K40Y-9's are 14mm dia. So, that's about 2mm extra from centre of cap which in turn, gets me 2mm closer to the output tube. There is still a gap (as you can see from the pictures), but it's narrow - maybe a couple of mils. I don't think the heat from the tube will be an issue, but should I be concerned? The K40Y's seem pretty robust (military spec).
I could mount them on the outer edge of the chassis, getting them further away from the tubes, but I would like to snug them up on the board if I could.
Please advise, Thanks