Markets managed to beat a spell of fluctuations towards the fag end on Friday and closed with modest gains, giving a guarded response to the GST Council's decision to reduce tax rate on a host of daily-use items. After some dithering, the 30-share Sensex scaled the day's high of 33,380.42 after the Council slashed tax rates, but closed at 33,315, a gain of 0.19 per cent. The NSE 50 finished higher by 0.12 per cent at 10,322. For the week, the Sensex recorded a fall of 1.10 per cent and the Nifty 1.25 per cent.