No Forward only goes in reverse

[sissy2009]

I have a 1988 36 volt Electric Club Car golf cart.. It will not go forward but will go in reverse. We switched out the F/R switch still nothing.. We can hear the solenoids clicking when we press on the pedal but it doesn't move.. If we reverse the wires and take the forward wire and put it on the reverse side then the cart goes forward but then i have no reverse... We also replaced 4 of the 6 batteries but did not get deep cycle batteries... So i have 4 new regular 6 volt batteries and 2 old deep cycle batteries... Could this be my problem? should i get 2 more of the regular 6 volt batteries or do i need to buy 6 deep cycle batteries for the cart to work? we just don't know what to do next... Thanks