I have an oil filter clearance problem on my Gen. VI 502. A regular AC PF1218 filter fits fine once it is installed, but there isn't enough room between the header and the oil pan (side kickouts) to remove or install the filter without loosening the header. A filter that is approximately 3/8" smaller in diameter would fit fine. I know a remote oil filter would fix the problem, but I don't want the risk of having oil lines near the headers, nor do I want to change the by-pass valve in the engine block. Does anyone know of an adapter available so I can use a smaller diameter filter?