I'm trying to find the max stress in a series of bicycle parts. The problem is that I can't get the stress to converge. As the picture shows, I get spots of singularities in the area, where I would assume the max stress would be.

I have attached pictures of the model without mesh control and with, which shows the singularities. (I have hidden a part to make it more visible)

(It needs to be said that the bolts are preloaded, hence the stress in the area, plus there are two forces applied with remote load, resembling the handlebars)