BGP/OSPF issue

[Gabriel Nickel]

Hi folks, we got a problem involving BGP and OSPF here. Lets say we are an ISP (AS 1) with two routers (Router1, Router2)in different cities. They are both running OSPF (and IBGP) to exchange intra-AS routing information. Router2 is connected via BGP to an upstream provider (AS 2). Router1 has static entries for a large customer network (downstream). All operations are running well but if we traceroute from our Router 2 to the customer network the packets dont take the path via Router 1 but via our upstream provider (AS 2) which is suboptimal and not desirable. From my understanding the packets chose this path because of the eBGP administrative distance (20). Do we have to decrease the OSPF distance to >20? In addition static routing is not desirable (there would be too many networks to announce). Any input would be much appreciated,   Gabriel