Hi,

Does the problem worsen near the end of the records?

Hello, the problem normally gets worse when the stylus is getting closer to the center of the record. I have had the same problem with a rebuillt MMC2 from Axel, simply increasing the tracking weight from the normal 1g to 1,3g helped a lot. 🙂

Actually no, it's just as bad at the beginning of a record as it is toward the end.

Ok, I'll try increasing the weight a little.

As for checking that the scale on the tone arm is accurate, how do I go about doing that?

I would advise that you should use a specialized tracking force weight(the cheapest being the "fulcrum balance"-type). This can be far more accurate than the weight measuring ring on the 1800 arm, if it needs calibration. There is some way of calibrating the scale, but I don't know how to on the radial decks.

-Søren

With the cartridge in place, turn the counterwight CCW until the arm is balancing, hold the counterweight tight and turn the plastic dial to "0", set your tracking force. For MMC 5 some 1.5 gr.

By tracking force weight, do you mean use a stylus force gauge, such as the digital type? If so, can anyone recommend a brand they like?

http://www.hi-fi-accessories-1.com/digital-stylus-force-gauge.htm

I just keep it simple with an Ortofon Fulcrum force gauge, they are cheapest 🙂

I also use the original B&O one I had along with my MMC20 EN cartridge!