[Nigel Buckley]

I know Bob/R says you should start with a Clean Barrel when using these other wise expect bad results - he says they perform better with a clean barrel - I know u got a Daystate (walther barrel), other manufactures recomend you clean the barrels every few hundred shots.
If you used Crosmans (they cruded up the barrel badly) before hand i'd expect bad results.
i suggest you clean the barrel and give them another go, i don't think you would be disapointed.

Regards
Nigel