Oscilloscope probes

[Bushbaby]

Thanks for your replies - the problem I'm having is the adjustment tool (which just appears to be a small cheap screwdriver) just wont fit onto the trimmer for some reason so that I can make just a minor adjustment to square the signal. I've looked using a magnifying lens and lamp and really cant see why the tool wont fit into the trimmer?? I'm thinking that that are just a cheap pair of probes?? What I'm asking is do you recommend any probes that can be easily adjusted as necessary with the supplied adjustment tool?

Best Regards