Replacing the main spring on a M70 Winchester?

[2ndAmendmentNut]

Technically it is a Sears M53, but anyways I have been getting some light strikes on my primers and the occasional misfire, cleaned up the bolt real good inside and out and decided to add the $5 part to my next Midway order. So now I have the mainspring, but it came with no instructions, how do I replace it? Exploded diagrams or pictures would be very helpful. Thank you

[Johnch]

http://stevespages.com/ipb-winchester-70.html

http://www.urban-armory.com/diagrams/win70b.htm

http://media.winchesterguns.com/pdf/om/model70_manual_om_s.pdf

http://homesteadfirearms.com/parts/shopcart/pid_1248.htm


John