I'm still running Camlo but not enough to tackle a marathon.Combination of illness, dodgy knee and age!
LB is fab. Lovely little boy. He went from 14 inch Isla to 20 inch Isla with 7 gears. Combination of light weight and good gears means that he can cycle up any hill ow. The smaller frame size just overlaps with the 14 inch Isla so would be fine for M if she's outgrown the 14 inch. LB is small and he was OK with the 20 inch (smaller frame) when he was 5.5 years. Although they are more expensive, Islabikes hold their value better than Halfords bikes. I got £150 for his 14 inch when I sold it on ebay after hundreds of miles of use!
Caro Well it's been nearly three years since I hung up the babyjogger but (assuming you have the type with three wheels), the trick is to try re-aligining the front wheel by trial and error. If it pulls to the left all the time, loosen the quick release on the front wheel and re-align it ever so slightly to point more to the right. Then try pushing the babyjogger along again (preferably do this on a flat path with no camber, rather than a pavement) and so on and so on. Some models have a way of making that adjustment permanent by means of a small screw at the back of where the front wheel goes into the front fork.