[StuBeeDoo]

My Fly kit Porsche 911 has a very floppy front axle.  I haven't actually measured the play in it, but it must be several millimetres.  The lugs on the chassis don't have enough material to allow drilling and screwing-in grub screws to limit the up-and-down travel.  It seems to me that the only solution to the issue, on this particular car, is to glue a tube to the chassis.  This isn't something I have attempted before.

As the axle is 3/32in - or approx 2.38mm - what internal diameter tube do I need to use?  Is 2.4mm going to be too tight??

Thanks in advance,
Stuart.