Hail Marshallians, i have an old 5210 from 1987 that im planning to convert into an 18W jcm800. The amp works fine, its just that after buying my first tube amp i cant play a ss anymore. Once you go tubes... also i already have the chassis and speaker cab (its a combo, for those who are not familiar with it) which i will convert to a head. is it a bit of a sacrilege to gut a fully functional amplifier? Also what are the requirements if i wanted to switch from EL84's to EL34?