I've been collecting a number of Betamax VCRs over the past couple of years, and doing only basic refurbishing such as belt and tire replacement, checking caps, etc. I have a chance to buy some original Sony alignment cassettes, but there are several available and I'm wondering which ones I need: Alignment tapes:
KR5-1 KR5-1S KR5-1M KR5-1V KR5-2ED
Tension tapes:
SL0003-C SL0004
Can I assume that the KR5 and SL- series tapes are basically the same? (except for the KR5-2ED, which is for the Extended Definition format). Thanks for any advice.