Heathkit as-101 crossover help!

I just picked up a great pair of Heathkit as-101`s same as Altec Valenica`s cabinets and drivers are nice to mint. My question is i find them not as clear sounding as i think they should be. Could this be caused by the crossovers? If so how do i fix the problem or doe`s anyone out there sell new ones?? Any info would be great.
I am not really into the technical part to much. I am just wanting to know if there is a upgrade or someone that sells the caps for these speakers? I really think they should sound better then they do. My Altec model 14`s sound alot better then these??? could i try the xovers from them to see if there is a difference??