My Raider 10 has gone back to Webley (via my gundealer) as the power seems to have dropped to about 6 ft lbs

The dealer told me that there is a seal which is prone to fail. I have never tinkered with a PCP - the thought of making a mistake with all that pressure puts me off. Even if I emptied it, I might not put it back together properly.

I'm very glad I bought it from my local gun shop.

I don't know how long it will take to get it back.