Confirming that mine won't fit into my Mantis unless I tug the rails apart, in which case it puts too much pressure on the pcb to be safe in the long term. It's pretty disappointing to run into such an avoidable issue - and it's not a board you could sand down either, so I don't think there's a workaround.

Other than that it's a great module though. The design itself is really good; the sound is quality (most important); it does what you'd expect it to do; you won't find any other options at 6hp with anything close to this feature set; and I actually really like the distortion from the ACAB circuit. For those with skiffs that fit it better I think it's a no brainer!