[Skybird]

Difficult to say without knowing your flight profile and how your altitude matched distances to the airfield. 1300 for a GS is already quite low. Try to have your localiser intecept at around 15 miles out, and when intercepting, have your altitude above ground at somewhere 3500 +/-500.

Your problem could be speed-related as well. Whn you sink below 10000 feet, it is amkndatory in all parts of the world that you must have your speed reduced to at least 250 kn at 10000. In climbs, below 10000 they use 250, in decents below 1000 they use 240. When you are receiving the localiser signal and are still 20 miles out or more, reduce your speed even further to 200-220. Do not forget to follow with your flaps lowering, I do not know how many flaps settings the default 737 offers, but flaps 1, 2 and 5 can be used up until 250 kn maximum, flaps 10 at 210, and then the following settings follow until you have flaps 30 (40 is rarely used only) at around 160 or 170. If you have not owered your gear at a speed of around 170 or with flaps exceeding 15, you should get an alarm over landing configuration mismatch, but again, maybe the default 737 does not do that.

However, do localiser intercept at altiude 3500 15 miles out with 220 kn, when on localiser, add APP mode, when APP is active and GS intercepted, start to deccelerate to touch down speed. Idf there is no reason to raise the stakes, don't raise the stakes then - keep your time and distance to the airfield for lining up the plane - do not turn into your flare! O'Hare is not Kai Tak!