[Dave Casey]

There are many things involved in the quota numbers,

available time(they know how many cars can run in the scheduled available event time)

available pit space

how many categories are being run (everything at Reading except Top)

They tend to set a higher quota if there is class in Stk or SS (class for stock at Reading)

Popularity of the class

I really doubt Reading will change, it is a real popular event at a nice facility at a nice time of year, in an area with lots of race cars, and in order to get into some events as popular as Reading, you really need more grade points so you can get in earlier. Add to that the Dutch is the week after, and it is more like a vacation destination for many