Since the death of Peter Southworth, Southworth Enigines has been bought by Bob Potter. Bob is updating all the designs and trying to eliminate any errors in the original drawings. If anyone is aware of any such mistakes in any of the Southworth designs, please let me know (or post here) so that Bob can ensure that they are corrected. Alan MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.