I am trying to accomplish a task in Drupal 7 with Ubercart 3. The task is to Restrict total cart quantity amount needed to checkout (e.g. no more than 8 bulk bags). This applies only to few items, where if item 1 is 8, do not allow to add more items(which have the max of 8 bulk bags as well) but allow to add other items. Item 1 have max quantity of 8 and item2 as well. In the cart if item1 have 5 then allow to add 3items to item2 or item3. Thanks in advance