[Elecraft] Q7 Collector Short to Ground

[Steven Pituch]

Hi All,
I just finished all the mods to bring K2 #402 to the current standard. 
I keep getting a collector short to ground when starting to tighten the 
bolt going through the heat sink of Q7. Q8 is fine.  I have taken the 
case off several times and inspected all the components.

Is there a trick to this, or do I need to order a new hardware set?

The plastic standoffs look a bit like truncated cones and the black 
shoulder washers don't have much of a shoulder anymore. It has worked 
for six years, but it might be time to replace the stuff.  I was hoping 
to get it on the air today, but........

Regards,
Steve, W2MY