Hums until I touch enclosure

[Strategy]

Trying to find what I think is a rookie mistake, but it's the first time I've encountered it. Pedal build (Garcho's Scotch Bonnet) hums when I touch the enclosure. If I touch the enclosure and the input jack at the same time, hum stops. If I touch the top and bottom plate at same time output volume gets REALLY loud. I cannot find anywhere where something is physically grounding out from touching the enclosure. Checking continuity with my multimeter, I get continuity for all the grounds in the pcb and offboard wiring, but then cannot find continuity from the circuity to the enclosure with my multimeter. I am completely mystified...!!! Grateful for any help. Always thought I'd run across this issue earlier I guess.
thanks...
Strategy

[slacker]

Sounds like your enclosure isn't connected to ground and is acting like an antenna and picking up hum. You should have continuity from the PCB grounds to the enclosure.

[rightbeforeimpact]

I'd make sure that the ground connections between the PCB, switches/jacks, and enclosure (this connection probably made through one of the jacks) are solid. Make sure none of your wires broke from being vent around during the built process

[Strategy]

Swapped out jacks for fresh ones, and issue is resolved. The input jack was the culprit, both jacks had been salvaged so who knows. Thanks all for the help!

Strategy