We had many custom deliveris.

[Brightamethyst]

Yeah. Put a weekly cap on the number of scrips and exp you can earn from them if that's the issue, but let us do the turn ins for everyone every week. Anyone coming in now will basically NEVER catch up on the achievements and such. (see also, Beast Tribe allowances.)

[MistakeNot]

Yeah. Put a weekly cap on the number of scrips and exp you can earn from them if that's the issue, but let us do the turn ins for everyone every week. Anyone coming in now will basically NEVER catch up on the achievements and such. (see also, Beast Tribe allowances.)

Never? You can easily get all the achievements for any one of the Custom Deliveries in far less time than the time between adding new Custom deliveries.
So if you just make sure to do all your custom deliveries each week you will have no problem catching up with all the achievements for them. It just takes a bit of time.

(Same with beast tribes. Maxing out reputation with all of them isn't hard at all, it just takes time.)