Had my front tires at 43mm. Then after having worn off about 1mm, took off all the shims under the front end and now I am not able to make 3.5mm in front end ride height. In fact its just under 3mm.

At this point how do I get more ride height?

There's still some rubber left in the tires are they done?

Do I need to consider a different front end that will allow me to run the tires all the way to the rim?