E-Rod

I've tested my 13b for compression using a regular compression tester a few times now, trying different things in between... The engine is not flooded. Supposedly it was rebuilt two years ago. I've messed with the mixture screws on the carb (it was swapped), and it seems to be in check as far as the fuel mixture goes. I pulled the spark plugs and there was some black around the centerpiece, but they weren't soaked or gunky or anything. They're brand new from the looks of it, but I cleaned them anyway.

Right now, I can get the motor to run, it idles fine, and I even drove it around the block a few times. It's severely lacking in power. Compression test results yield three jumps of about 40-50 PSI for both rotors.
Help? I'm new to rotors. I followed compression testing guide on Banzai-Racing/Rotary Resurrection, and these results seem to be way too low for the motor to even run. Am I doing something wrong? Are my seals just completely screwed? (I wouldn't think so, given the three jumps of compression) Maybe they're stuck?

Anything helps. Thanks.

RotaryRocket88

iTrader: (7)

Have you removed the schraeder valve from the tester? A weak spring will still allow the needle to move, but it won't go as far as it should.

40-50 psi on all 6 rotor faces won't idle, let alone start. But the severe lack of power points to a blown engine.