nasty tasting pork belly strips

[arc1978]

Hi every one am new to this forum and to slow cooking on bbq. Last night I slow cooked some belly pork strips for just over 4 hours they was very very tender but tasted nasty and seemed really fatty I had them in a pan on top of veg and emptied out a lot fat during cooking, the temp was around 270f and 300f I cant think what I done wrong any help please peeps thanks