Sounds like water is getting in there worse then it should. The passenger side is known to get more water logged then the driver. Mines was rusted when I installed my struts/springs.
What kind of mounts are you using? If you use cheaper parts don't expect long lasting results. If you got the dough, Moog and KYB make some pretty good strut mounts.
2010 Camaro SS
, 2SS, RS pkg, 6-Speed. The Family Camaro.
A few Chevy daily drivers, keeping clam, driving a Chevy.
March 2012 COTM
Ooorah! Semper Fidelis