Ehh... unlikely.Are they available somewhere? Could you share? I'm always interested in tweaking the system and creating new ones.
One was for a school camping / picnic kind of thing and is mostly OD&D (d20 and d6 only). The other two are AD&D based. The fourth is heavily houseruled AD&D, getting finished Any Day Now. Since it is for a home game there is a lot of IP from other games, novels, &c. that I haven't bothered disguising or adapting.