how to randomize rep jobs beyond an hour?

[pesos]

Hi, we have a number of file server replication jobs. We want these to replicate every 4 hours. The problem is the randomizing option in the scheduler only allows you to randomize it within one hour... i.e. we have 4 jobs and they are all set to run every 4 hours - then in the randomizer i can use it to get them scheduled for 8pm, 815pm, 830pm, 845pm... but I would prefer to have them offset more... so it would be more like 8pm, 9pm, 10pm, 11pm to mazimize separation and minimize overlap. How can we accomplish this? Thanks!