2nd gear stutter.

[flakey]

first check the gear selector forks, each gear selector fork has a slightly raised lump on the end of each fork both sides, now 1 of your forks will have worn away those raised bits on 1 side of the fork-it will need replacing as it will be slightly bent and also you should be able to see where that particular fork was located in the gearbox and then to which gears it would move, the gears that would need replacment will have rounded off the edges of the square blocks on the back of each cog,