[Shotimes] Tokico failure?

[van Oss]

The left front Tokico on my 92 clunks when going over bumps.  On a lift, 
moving the wheel up and down, it appears the internal cartridge has somehow 
separated from the housing, and the cartridge is moving up and down about 
1/8'' to 1/4''.  The damping still works, it's just that the noise is no fun 
to listen to.

Lifetime warranty on Tokicos, right?  Any tips on how to work with Tokico on 
this?  I don't want my car out of service while I send in the old strut and 
they send me a new one.

VO