Thanks so much for your kind comment! Jumper is definitely a big influence on my level design haha, it was the game that made me love this sub-genre. The leniency in the spikes is something that is part of the tool, and is intentional by the tool's developer. I could have tried to fix it by hacking the code, or by some other tricks (like using other objects instead of the default spikes), but I decided to leave it as it is because I think the leniency is fine for this particular game. Thanks for playing, I'll try to watch your playthrough soon!