Hi,
Sorry it as been so long since i replied with an update of spring replacement. Unfortunately i did not have the chance of replacing one spring at a time and trying my Super 90 to see if that particular spring did the job.
I replaced the recoil, magazine, carrier, hammer, firing pin, and inertia spring. When i tried to load the magazine tube i found that it would not accept more than two shells. I had been supplied with the wrong one. In went the original and i tried again, success, a full magazine.
I then chambered a shell and pulled the trigger and...................................... nothing. It did not fire. Tried again and nothing. I stripped it down again and check everything and it all seemed O.K. with no signs of why it did not work. I decided to replace the new inertia and firing pin spring with the originals. I was only able to fire it again this weekend.
I first tried to to see if it would actually fire so chambered a shell and tried a single shot and BANG, success, but it did not quite eject the shell. Tried again and it did the same. Then i tried to fire several shots in quick succession and it performed brilliantly managing to eject all shots fired. Sort of success but still not 100%.
I will try a heavier load to see if it cycles after just one shot.
Cheers,
Uncle Bodwin.