New baffles for old tubes?

I have a couple SWR suppressors I bought in 08. A Trident 9 and a .22 can (can't recall what it's called)

As far as DB reduction goes, they're pretty comparable to cans designed and made in the last 5 years. But the blowback from them is ridiculous compared to modern suppressors.

My question is, which SOT's should I reach out to for making some newer baffles for my tubes?