Are the splined cogs on the older Suntour "Perfect" the same dimensions as the Pro Compe? My two road bikes both have this freewheel, and they've seen many thousands of miles of miles over the last three decades... but I've run out of unworn steel 19T splined cogs to fit... Does anyone here know where I might find such a unicorn? The alternative is to buy one of these NOS New Winners with what are to me unusable ratios? My current ratio is 15-16-19-25-32 and works well with my 42-52. Don't want to spend hundreds on revamping my drivetrain.