So, I sent off for one of the special wound ALG recoil springs - as its cost compared to others, & it seems like a good concept.
Also invested in a NEW Hungarian extractor & spring. VERY GOOD DEAL FROM "ARMS OF AMERICA Military Imports" + FREE FAST SHIPPING.
I'll need to try it all out, with everything messaged in - even though I couldn't detect any flaws in the old parts.
Fingers crossed !