3mm and 1.75mm nozzle

I have built a nozzle from the wiki design that works great. But i bored the id of the PEEK tube to 5/32 and installed a 5/32 x 3/32 PTFE liner for 1.75mm filament. My question is can i just put a bigger id PTFE liner in that will accept 3mm filament also or do you really need to have a seperate PEEK and nozzle for switching from 3mm to 1.75mm filaments? I would think the larger id wouldnt hurt anything when using 1.75mm filament, it would just have a lot more wiggle room in the bore. Am i wrong?

I think the PTFE is going to have to be close to the diameter of the filament or it's likely the filament will buckle in the tube as it softens, I've seen this happen even with a small gap between the botton of the cold end and the top of the hotend, and the filament will be a lot softer inside the PEEK.
There are a number of hotends that only require you swap out the PTFE liner to change from 1.75 to 3.0.