Honey, I think I broke the Jolt

I was hoping for a better inaugural Discuss post, but...

So, I got a Rebelle Jolt clone for Kiddo 02 because 01 liked theirs so much. So I thought I'd do the usual stuff like drilling out the air restrictor.

Except this time around, performance has gone way down. Barely flops out of the barrel. I thought I'd try replacing it with some brass (17/32 I think? I should really write this down), but it's even worse now. I'm thinking of drilling out enough space for a Crayola barrel, but I'm kind of afraid I'm just butchering it at this point.

Please advise, and thanks in advance.