MCM 3.7 190 cap and rotor question

[Dubed]

Hey guys. I seem to have a mismatched cap and rotor. Engine has about 20 hours on it and started misfiring at low rpms. Digginig into it I found what I think is the rotor is not a match for the cap. You can see from the picture the rotor is just grazing the contacts on the cap.
I have the pertronics kit installed and my question is.. if I buy a new cap and rotor kit, should it be the same as the stock kit with points and condenser. I can't imagine that it would be different.

Thanks!

 

[kenny nunez]

Is there excessive movement with the rotor shaft? A worn upper bushing will allow the rotor to not stay centered.

 

[Dubed]

Is there excessive movement with the rotor shaft? A worn upper bushing will allow the rotor to not stay centered.

There is up and down movement but barely any side to side play.

 

[Grub54891]

Well, something isn’t right. The rotor shouldn’t be that high to rub there. Look inside the old rotor, is there a chunk of plastic stuck up the there? Looks like it wasn’t seated all the way. Some go on rather tight.

 

[Dubed]

Yep. Looks like a piece of plastic from the casting. I threw a new rotor on.
Thanks

 

[Dubed]

I'll check the adjustment on the Petronixs and button it up. Hopefully that was it!

Thank you

 

[ROY WILLIAMS]

I'll check the adjustment on the Petronixs and button it up. Hopefully that was it!

Thank you

put the new cap /rotor and inspect the ignition timing ...
pertronix !!!! works very good .................