I've been reading about mods to turn the Jolida 302 in to a triode mode machine. Cut wire going to pin 4 and add a 2 watt 100 ohm resistor between pins 3 and 4 of each tube.
Simple and a lot of people say it is a good mod. On the other hand I read an article which says you can do this but you must also make other mods to make it work properly which includes a bunch of circuitry and use of different tubes.
I'm going to give the simple mod a try. Worst case I could always switch it back.