Just have a Tempest myself, a 4.5mm.
Band rought it sechand but also have a new one, also 4.5mm.
Cocking is smooth enough and all I hear is air sucking in, no scraping or anything. The cockingmove is a bit awkward at first but you get used to it soon and you'll find yr own best way of cocking it.
Trigger is pretty good imo, I expected far worse from all those stories!
Shooting 1cm groups at 6 yrds edge-edge is fairly easy and as many (bigger)10-20 shots ragged holes as you like at 10/12m. It's not a matchpistol but it's accurate enough! For now it like H&N Finale Match a lot and Lazadomes look promising.
Don't feel it's hold sensitive a lot, unlike many say it is. Maybe cause I'm shooting large bore handgun as well. Shooting manners are pretty calm imo too. You do hear some springtwang but almost no twisting. Upon use, the unlocked barrel will get some play (unavoidable with this system) but it should be ok as long as it's play-free while locked. Sights are good enough for it's uselinking.
I did notice both the sechand ánd the new one are pretty dry inside. Yrs too?
I'm considering a 'lubetune'.
Finish is good allthough you do see different materials are used. Serial number stamped a bit careless. Many safetycatches have play from new.
Grips feel a bit thin for me, but other, wooden, grip are available.
Most importantly; it's the MOST fun I've ever had shooting a pistol!
It's my best buy in years! Should've done so yrs ago!
I'm never parting with this one!