ORIGINAL: Ram Jet
Thanks w8, in that case I wouldn't hone it at all except maybe with a paper towel.
Regards,
Bill
Not deglaze the surface in chromed sleeve... The chrome are very slippery and will not wear out the piston ring as the steel liner against piston ring. The piston ring are porous to take up oil inside and it has graphite inside as a part of the lubrication.
I has Moki M5 with chromed steel liner from 1973, there are no sign of worned surface in the liner. The engine has still original piston ring.
In your Enya and other engine of difference brands with steel liner (not chromed liner) need deglazed surface with wet/dry sandpaper 400-500 before use. It will improve the lubrication of piston ring with many pockets of oil in the cylinder surface and longer life of piston ring.
See my own made sleeve and piston/pistonring:
http://www.rcuniverse.com/forum/fb.asp?m=4929500 
My only problem is that I have a Mitutoyo dial vernier that measures my Craftsman feeler blades as being about .001" shy of what's etched on the blades. Do I trust Mitutoyo of Craftsman? Do I really care about .001" when my present end gap is .011"? I'm going with Frank's recommendation. If he can make a ring he should be a good judge of what the end gap should be.
The Mitutoyo measure tools are of high quality. But the dial vernier/vernier caliper are not to rely.. accuracy of measurement when using a caliper is highly dependent on the skill of the operator. Regardless of type, a caliper's jaws must be forced into contact with the part being measured. As both part and caliper are always to some extent elastic, the amount of force used affects the indication. A consistent, firm touch is correct. Too much force results in an underindication as part and tool distort; too little force gives insufficient contact and an overindication. This is a greater problem with a caliper incorporating a wheel, which lends mechanical advantage. This is especially the case with digital calipers, calipers out of adjustment, or calipers with a poor quality beam.
To check the thickness at the feelerblade: use micrometer.
Use the feelerblade to measure the ring gap. If you has not less than 0.0019 (0,05 mm) which are common use in the feelerblade set. Buy the feelerblade set from machinist shop who are selling the feelerblade who are less than 0.0019 (0,05 mm), the feelerblade set are from 0.039 (0.1 mm) to 0.0007 (0.02 mm).
0.001 (0.0254) are not far away from where the ring gap in the Magnum 52 4 stroke engine who has a ring gap 0.0011 (0.03 mm) [8D]