Hi all.
I've got an fwb600 which is lovely to shoot & so accurate. But sometimes when cocking it it releases the air pressure as you start to return the lever, like the piston seal isn't sealing & allows the air past instead of compressing it. Sometimes it can work perfectly time after time & sometimes it'll fail several times in a row. It always works fine once it has compressed a charge.
Is it a matter of stripping & replacing the seals or is there anything else to try?
Thanks.
Neil.