It is very unlikely your extractor spring is causing you any problems, since you don't report fail to extracts.
The buffer spring is GTG.
If you are concerned about ejection simply get an H2 Buffer. Most rifles will run on the H2. Here are sources:
BCM: https://www.bravocompanyusa.com/H2-C...carbine-h2.htm $29.99
DSG: http://www.primaryarms.com/heavy-car...oz-dsghcarbf-h $21.99
PSA: http://palmettostatearmory.com/palme...vy-buffer.html $19.99
I've purchased from all the shops listed and haven't had any problems with shipping times, although some say they have experienced slow shipping from PSA.
Install an H2. to paraphrase the guy from Men's Warehouse, You're gonna love the way it shoots.

