HELP: popping on MC TUBE + MICROAMP

[GTAmax]

hey guys. I´ve built a MC TUBE and added a MXR microamp to use it as a booster after the mc tube. the microamp works with the mc tube power supply and an 7809. This thing has a relay switching true bypass. the problem is that when I bypass it pops really loud. I´ve put 1M pulldowns in each board (microamp and mxr and nothing happens).
Thoughts? IM IN A HURRY!!!

[petemoore]

leakage on DC blocking capacitors...my feeling is it is something else though. Isn't that a HV circuit? Take it easiest !!!

[GTAmax]

I`ve just fixed it... seems that some grounding problems made the POP.
tanx