This read-create value, 1-50, sets the maximum allowed difference in modem count between a newly registering modem's initial upstream channel and the least-loaded channel in its load-balance group, applicable when rdnLoadBalBasicRuleEnable is set to registration(4); if this threshold is exceeded, the modem is moved to the least-loaded channel, otherwise it stays put. Admins tune it to control how aggressively new modems get redistributed at registration time versus staying on their initially assigned channel. A lower threshold makes the system more aggressive about moving newly registering modems onto the least-loaded channel rather than leaving them on an already busier one.