Kanger Protank: sudden TIGHT draw

[jmkiang]

I've been vaping on my Kanger Protank for more than a month and its been great. I build my own coils and have blocked off 2 of 3 air holes using Teflon tape. Perfect draw for me.

Yesterday, out of the blue, the draw got SUPER tight on my eGo-C Twist 1000maH battery. Tried it on my K100 and its the same. However, when I put it on my eGo (non twist) 650maH, the draw is fine.

Any ideas?? The 2 of 3 air holes aren't blocked. I've changed the base/coil and no issues. No gunking on the wick/coil. Water flows straight through the stem/base when I rinse it.

I'm at a loss.

Any ideas?

Edit: K100 in 18350 mode (with top 3 air holes blocked). Tried it in 18650 mode and I get nothing. Is the 510 connection blocking my PT air holes?

 

[jmkiang]

So I changed the atty with my other one and it works perfectly fine. So strange. The problem atty has no blockage at all.