H&R 929 Pistol misfires...need help

[flyfisher]

I have an old H&R 929 .22 pistol that is in great shape.  Only thing is...it will not fire on each pull of the trigger.  When I first purchased it (used), it onlly fired about 4 or 5 of 9 shots.  So I opened her up and found that the plastic-headed mechanism with the hammer spring on it was broken (plastic head was broken).  I replaced the mechanism and spring with a brand new one just yesterday.  The pistol goes off better than it did, but I still get a few misfired each cylinder.  I know that everything is installed correctly, and I know that these old pistols have a habit of wearing out springs, but I would really like better results than what I am currently getting.  Any help would be appreciated.

[m-g Willy]

I have the exact same problem, with a 999.
After replaceing the hammer strut along with the new spring,it still miss fires 50% of the time :x
I guess I can use it for a paper weight :shock:
--Willy