[kx250rider]

Those are tough to converge. First, degauss the tube well, as the convergence can be thrown off by magnetized mounting screws, or magnetized shadow mask that the built-in degausser can't always take care of. On those inline tubes, there are small PM magnets around the yoke, which enhance corner convergence. If you see one in the corner of the tube, behind where the misalignment is, you could try marking it with white paint, and move it a little to see if it fixes or worsens the problem. Again, it's too complicated to try to describe here, but the bottom line is that you have to fool with carefully. The fundamentals are that if there are a total of four rings, the two closest to he yoke are the purity. The rear pair are the CENTER red/green "fine" convergence, and if there is an additional pair (total of six rings), those do other funny things with the center convergence (nice technical term, LOL). The edge convergence is done ONLY by yoke tilt. You remove the rubber wedges, but to not loosen the yoke clamp. Use the wedges to tilt the front of the yoke up & down for side-to-side convergence, and side-to-side for top & bottom convergence. The most annoying thing is that moving any of the rings, can throw the purity off too.

It might also be helpful to get a copy of the Sams or the Hitachi manual for that set, and read the procedure. Sometimes they give good hints & tips more than the regular procedure.

NOTE: If the set has ever been dropped, it might have a dinged shadow mask, and that would make it impossible to get purity and convergence so good.

Charles