I just picked up an r/c and it came with a KO PROPO EX-1 PRECIOUS radio. I like the fell better then my m8. The ex-10 spektrum modual work on this radio?

Yes, it should work fine. I have both a Helios & an original Mars, & my Spektrum module works fine with both, & I had a friend with a Precious who wondered about that, so we tried my module on his radio & seemed just fine too, so he bought it for his & as far as I know he's been quite happy with it....