Just adding my bit to this. I have been using a Bosch router under a
table for quite some time now. Following a suggestion in a woodworking
magazine, I removed the springs from the router and supported it using
an adjustable car jack. I find that I can get some very accurate
adjustments to the router.

I must admit that I am using an old Bosch router table, which could do
with changing now. So I am saving up to buy a new table, or build one,
hopefully later this year.

John