Hello,<br /><br />I had very disappointing experience with these Reeds (model 128 for Johnson 30hp).<br /><br />They didn't function at all.<br /><br />They were badly made, were not plane only with little stability.<br />They wouldn't seal the crankcase with the pistons going down.<br />I had basic doubt in the function and feared hte engine might fail with it.<br /><br />So I didn't change the stock reeds, which are pecise, stable and very well sealing.<br /><br />I gave the "Power Reeds" back to the distributor.<br /><br />Regards Nordy