No worries, it's working now. I forgot the most important bit (reelstop, skill, you don't have to put it on activate - any square on the board is fine because it processes the square AFTER the hidden features, which is why it works)!
Have you tried going into Options and setting it to £25 jackpot? This may well work, depending upon which version of the machine you are playing. If not, then there is an identical game called Thunderbirds, and the £25 ROMs are available for this.
NOTE - There are TWO JPM Thunderbirds games, so check which one it is before you download it!
A quick question regarding Scorpion 4 and 5, and Mazooma. I have seen three Mazooma machines - Nuns and Roses, Cabin Fever and Bobby Dazzler, which play at a certain speed, but there are a few of them (not many, mind) that play significantly faster. Would I be right in thinking that the ones that run faster are running on Scorpion 5, while the slower ones are on S4? I don't know, but I can't think of any reason why some are faster than others except that they might be using updated technology.
No, it's a JPM AWP (£10 or £15 jackpot) with a start to end board. If you get Roll Up on the first ? and hit 11, it goes Add Again to Add Again to Add Again ... to Jackpot Repeater. The logo goes red as well. I think it's from around 1997ish. Does this help?