Mato metal sprocket for M1 Abrams issue

[atcttge]

I was so eager to install the metal sprocket when it won't fit the gearbox's shaft. Turns out the metal sprocket inside looked like this:



Note that there are two tabs instead of just one. WTH?!?

Is this a quality control issue or is this the norm for M1 sprockets? My Mato Leo 2A6 metal sprockets were ok. I'm thinking this is a quality control issue, that they forgot to drill away the extra tab. So now I need to fix this for it to be usable.

Ideas?

[forgebear]

hi there they look like tamiya ones to me mato don't make the sprocket yet its in the pipe line to be made
dave

[atcttge]

I have to make a correction for the record:

The tracks were not ordered from Mato but from eBay now that my memory is clearer. The sprockets came with the tracks.

So I guess I'll have to grind that extra tab to fit the driveshafts, yes?

[greengiant]

Yes they are made to fit Tamiya shafts. Had to do the same thing to metal sprockets I bought for a M26 to put them on the HL shafts.