Love the Wasp Nano. I have two - one built with a SS spaced clapton and the other with a 22ga spaced Kanthal. They will spit at you if you over squonk, but I have gotten the hang of it. Nice too that you can add a 510 drip tip to move further from the volcano.
Also have a Serpent BF on one of my Pulse squonkers with dual 26ga coils, and it vapes and squonks great. The 510 pin is a bit short, and it only works on my mods with a spring-loaded or adjustable 510 pin. It didn't work on any of my three Coppervape mods or my Boxer clone but fires fine on my Pulse mods and Reo P67s.
Other than that I have a Pulse 22 also with a SS clapton and a Hadaly currently in the rotation. Then there's my two Grands topped with O-Little clones and 26ga Kanthal 2.5mm micro coils - but you said 22mm.
The Wasp Nano can be a spitter, but not as bad as the Solo was so it was shelved. I added an extension D/T to the Nano, it never spits now.
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Think you need to try a different build in the Solo. A spitter it is not.
What build do you use in your Wasp? I have a 2mm 26ga SS316L in there now at ~0.40 Ohms. Great vapor but flavor is not quite there.I have 2 Pico Squeeze (and 4 Pico TC 75W). I DLH, will not accept leaking. What I've tried out on the two Pico Squeeze mods includes Hadaly, Petri V2, Pulse 22, Solo, GP Dripper Pro, Serpent BF and Wasp Nano (all black versions except the GPDP).
For a long time now a Wasp Nano and Serpent BF have resided on them.
What build do you use in your Wasp? I have a 2mm 26ga SS316L in there now at ~0.40 Ohms. Great vapor but flavor is not quite there.