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That is the reason that I changed from standard sized crank pins years ago. Every time I changed a big end for someone the groove at the end of the crank pin was full of rubbish. If one goes for the much larger crank pin, which used to be made by Alpha, then the feed into the big end is a hole which has to line up with the hole in the timing side flywheel. I prefer the crank pins which are longer over the larger diameter so that part of that larger diameter goes into the flywheel and makes a much stiffer job. A castellated nut is used to tighten things up. Modern filters might prevent some of this and so might some modern oils.