It's very rare that you will ever see full suspension unloading in a street-driven car. Perhaps if the car was airborne you could see it... but typically the strut rods will seat themselves within a few miles of driving and they'll never fall out. If the car is very low, you may want to consider some shorter shocks for lowered cars such as the C-STN237 GAZ shocks. 

The other option, and the one we use in the race cars (for other reasons*) is to install a rubber bump stop from in the location used in the wet suspension cars - such as part number 21A1517. This will require drilling a hole in the dry suspension subframe to mount (see the diagram in catalog on the product page for how they mount) - they can be shimmed to get the correct droop amount. 

*This isn't to prevent the strut rod from falling out - it's for suspension tuning with sway bars - even of the very low race cars, the strut rod will never come out.

Mini Mania Tech Team

The Classic Mini Parts and Accessories Experts