PSU testing

[talking_glowstick]

Hello,

I have a few questions about the PSU-PRE that are somewhat related to the posts above.

So far, I've been able to figure out most of the build, but have three questions that are preventing me from moving further:

1) Do I need to heatsink the bridge rectifiers (to run four tubes)?

2) Resistors 10-13 are not included in the kit.  Are these optional?  What does a higher vs. lower value accomplish?

3) Included instructions specify installing LNK4, 5 and 6 for 6V operation, and LNK7 for 12V.  In a post above you state, "You should see >200Vac out from T1 and >12Vac from T2 if LNK4 and LNK5 are in place for a 12V supply."  This seems contradictory.  For 12V operation (with LNK8 installed), which links (of 4, 5, 6 and 7) should be installed? 


Thanks in advance.