A modification that I made to my printer was to replace the build plate with a PEI spring steel plate. This improves the.print sticking to the bed & aids removing a finished print. There are two sorts, those that are magnetic & those that are held on by clips. The magenitic plates are over twice the price over the clip sort. Naturally I went for the cheaper! It has a disadvantage, I find - unless you place the clips carefully, there is a possibliity that the nozzle can come into contact with them. This happened on my print of the Charles Martel. it resulted in a slight chip, or nick in the nozzle, so that the filament came out an angle, not at 90 degrees. I watched the first level go down & stick to the plate - it seemed to be OK, so I left it. Next morning, it had finished, but looked terrible, the layers didn't stick together properly - it felt like a sponge!
It tool quite a while to figure this out, but a new nozzle was the solution. I managed this for the first time without burning my fingers. After a nozzle change, the bed has to be re-levelled -not a problem, just takes time. The printer is now happilly cuckling to itself.
The nozzles are brass, and they do wear out, they are cheap, and can be considered a consumable, I do have a small box of spares, like nozzles, drive belts, fans - all simple replacement parts. I get them from China, where they are all made, it can take a couple of weeks to get them, hence my spares. You can get them a lot faster in the UK, but they are still the same Chinese made parts at a substantial premium!
Dave