Are MMC supplying standard size new barrels, at a bargain price, to go with the expensive standard size pistons? If not it's pretty pointless. How much for a rebuilt "off the shelf" X-Wedge currently Steve? They could well be a bargain but limited stock I guess?
Unless we get some realistic spares supply lined up for these engines we will be in a worse situation than the JAP and Matchless guys with the old M3W are. The electronics are not so bad, the sensors are all HD compatible items that will be around for some time because of that. The ECU can be substituted with something such as an Emerald. The mechanical engine bits are a concern in the longer term, unless substitute or equivalents can be found.