I keep overtightening the nut when putting on a new bit for my Bosch palm router. And Boy ! do i literally pay the price for that mistake. Online Bosch shop have the price of replacement collet and nut at c. £ 30 ....that s outrageous! Further online search has the price down to around £20 ...and thats for 2nd hand or used ones! I wouldnt be too sure ofthere quality tbh. Any advice on this other than not been so aggressive with my tightening of collets would be appreciated....becuase the only tightening I'm doing at the moment ...is my budget.