HA! with an angel if things go wrong its a sinch, angels are so easy to use a bloody monkey could learn how to alter the MROF, Dwell and be albe to adjust it to the settings they wish, ben mate, if i were you... GET AN A4 FLY!!!!!!!!! 2nd hand, cheaper and way better, i tested out tom allens A4 fly the other week, and if i had the cash i'd BUY BUY BUY...... AN A4 FLY!!!