Question about can seamers and leaking

[JeremyJed]

I just got the oktober BenchMK can seamer and canned my first keg. Everything seemed to go well seaming the cans and a rinsed each can off after seaming. However I appear to be having quite a few cans with beer leaking from the seam.
Attached is a pic of one of the worst ones. The thing is, the can is holding pressure. I can squeeze it and I don't see or hear anything coming out.

Any idea what's causing this?

 

[Bobby_M]

Can seams are pretty finicky. One thing that appears to help is to not linger on each touch of the roller and don't ease in too much. I move the lever to each position with intent and it only needs to rotate once or twice before you should get off it. Bing, bang, off.

 

[Wagon_6]

Exactly what Bobby said. It’s very quick to get a seal vs cutting right through the lid. That looks like one of the rollers isn't as tight as it maybe could be? I have a cannular and watched the setup video 100 times while fine tuning the rollers. The way I understand it is the first roller folds one way and the second roller doubles back over to seal so they both need to be setup properly.

I read somewhere else to buy tonic water to can a few and then submerge them in water to see if you have any leaks. That way you don’t waste the good stuff.