Jvc m70 record bar wipers

[Mustang06]

Hello I took my jvc m70 record bar off to disemble it it clean the contacts as I opened it up I didn't notice that there were two types of wipers. There are ten wipers with 3 prongs on each side and four wipers with just 2 each side.not sure where the 4 go with the two wipers on each side. I believe they go in the back .if any one has any pictures of one opened up would help .

 

[hopey]

I think the longer one's go in the middle.

 

[Mustang06]

I think the longer one's go in the middle.

Well thats I think there all same size just 4 that have 2 prongs on each side compared too the others that have 3 each side. I put 4 in back where less traveled.