Report Abuse. Honing out the cylinder is just taking the edge off if you will. your just cleaning it up abit. You shouldn't have to get a bigger piston. but what you might want to check is if that is the original piston or if it has been replaced.
A common cause of variegation is the masking of green pigment by other pigments, such as anthocyanins. This often extends to the whole leaf, causing it to be reddish or purplish. On some plants however, consistent zonal markings occur; such as on some clovers, bromeliads, certain Pelargonium and Oxalis species.
Leaf Diseases. Fungal diseases from various pathogens cause leaf spots, blotches and blisters on birch trees. Cylindrosporium and Septoria cause small spots with no borders and Colletotrichum causes larger brown spots with darker borders. Anthracnose diseases, caused by Marssonina and Discula pathogens, form angular blotches instead of round spots.