Do the axel shafts in a shift on the fly four wheel drive straight axel always turn? I have my 85 full size blazer and am considering installing a spool in the front. Of course the only way I could do this is if the axels are not always spinning. Otherwise it would handle probably dangerously in normal road conditions. Anyway know? I don't have locking hubs if you didn't understand that. This would be an awesome performance upgrade for the 4wd off roading capabilities if it works like I hope. Lock it in four wheel and with the planned eaton or auburn posi it will be true 4wd ripping the terrain away.