1. How can I calculate the latency between my system and Kite API servers, if there's another preferred way than 'ping' 2. How do I sync my clocks with the Kite API servers, and how do I make sure they're in sync? 3. Is the Margin calculation for bracket and cover order, up-to-date? 4. How often do the margin-multipliers get updated in a day? i.e. how often will I have to poll for an update?