Corsa-B.uk - Vauxhall, Opel and Holden Corsa B Owners Club

I have fitted a steel gearshift link bar instead of the old plastic 'pop off' plastic one but although it works fine and the shift is a little less sloppy I now have a viabration from the gear lever which is very annoying. anyone else had this and if so have you found a cure for it?
Is there an upgrade, apart from the racing link plate, to tighten up the shift lever, it is so sloppy.