Our regulator with the OS 1.60FX works great. My brother has one, then another guy at the field and they work great. Our regulator does not have a midrange adjustment because its not needed. The cline regulator basically you control the spring tension that holds the diaphragm closed. You can actually have enough pressure to force fuel through the regulator which is not the case with ours. On ours, the carburator actually sucks open the valve as it needs it, so the low speed needle on your carb is still effective. Unfortunatley there are 2 motors which we have had problem due the very large bore on the carburator not producing enough vacuum to open the valve. These 2 motors are the Moki 2.1 and the Moki 1.8. We are working on a fix for this and have had some success..however we are not ready to offer that yet for production. If you have any questions, send me an email at [email protected]

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