Got myself a brand new SANWA radio for my savage X ( still learning it's functions ) upgrade both the spur gear and the clutch bell to hpi harden steel ( doing my 4th tank tomorrow. Hope it goes well) . 2 hitec servos. This should be good enough for now. Then I notice that the servo horns look different. Can I use the stock Linkage with the new servos? Also do you thing Linkage upgrade is a good idea. Heard alot of OFNA Linkage but just unable to find any. Could you direct me to the site. What parts are needed to upgrade.