ross comp problem

[ppatchmods]

i built a ross comp from the vero layout: http://aronnelson.com/gallery/main.php/v/Toneys-Album/Rossv4.jpg.html
i haven't had a chance to check the voltage on the trannies. i used mpsa18's for all trannies. i also added the attack pot instead of the switch so i deleted R1 (150k) and placed the pot where the switch connects.

the problem i get is very faint output and a rythmic popping that speeds up/slows down when the sustain pot is adjusted.
i'll get my voltages this evening, but i was wondering if anyone else had experienced this? i couldn't find these symptoms by searching so i haven't a clue what is happening.

also used 2 1k's instead of the trim pot

[ppatchmods]

i touched up all my solder joints and checked for bridges and she fired right up. sounds nice too.