Ansal Aastha: Legal due diligence mein help chahiye

Capital ready, but buying for myself is proving tougher than selling! Looking at Ansal Aastha Mig Zone near 150 Feet Ring Road. I know builder marketing, but legal checks pe thoda ghabrahat hai. How do you guys *really* verify RERA registration details for builders like Ansal API beyond just the number? Matlab, unka past project delays, OC status, sab kaise check karte ho? And title deed check ke liye Rajkot mein koi reliable lawyer hai? Builder-buyer agreement mein kya hidden clauses dekhne chahiye?