Considering the Shimano MC19 Crankset on my bike, do I need a crank puller in order to pull the cranks in order to remove the BB to verify whether it is in fact the Chinhaur 68x111? Park tools mentions that some cranks have the "One-key release" system which does not require the use of a crank puller.

According to Raleigh technical support, the bottom bracket on there is the Chinhaur 68 x 111.

Considering my dilemma, sydney’s advise, and the good possibility that it is the Chinhaur 68 x 111, might I want to go down to a UN52 68x110? I think 1 mm in that direction is precisely what I need. Raleigh technical support actually recommends going up to the UN52 68x113 as a replacement, but I suppose that is assuming the stock Acera FD remains.