Artemis p15 vs rti priest mk1

[partner k1250]

Has anyone had a problem with the RTI Priest main valve. Just acquired one and when firing it gives a nasty little pop and puff of air from the hammer/valve area.
Is this a common thing or am i just unlucky
Apart from this it's a cracking rifle.
Even i can hit a target����

The mk1 do that nothing wrong with it

[32:1]

Weird how these two guns are comparable by someone, bit like comparing a Trabant and an M5

Oh and you can buy spares for the m5

Ive had two new p15’s snd both riddled with faults, tried buying parts but importer wont supply parts to service/maintain, enough said. Never owned an RTI but have had 15mins with a new one at the range, Id say mechanical and accurate. Id think the prophet sidelever nicer to use, Im kinda conventional and thought the RTI looked weird but the accuracy downrange is what matters and that priest stacked pellets even with me at the wheel

Id take a compact for a spin no worries

[broke again]

Spoke too soon ......the valve started leaking so i changed the valve stem.
Not so bad now but still leaking. Maybe it needs to bed in.
Does anyone have an idea how to lap the valve seat if needed?
Only had it a week and it's not do good so far. May send it back if it doesn't improve.