Keep the records that are 131 and 66 characters long. 131 chars are for the uncompress pubkey and 66 chars for the compressed pubkey. The uncompressed pubkey prefix is 04 and the compressed pukey is 02 or 03.
This one is 130 characters:
0405eec604993048314294f7c1f9b45c3ed8424ef940426336153831f8813228a788f845e1df353c2021174573e33f2fab05d94e1dd5e5449832ec83ac3d5db17e
The compressed ones are indeed only half the size. But I meant the ones where the length varies by only 2, which is probably caused by truncating the first 148 characters.
Could it be the 148 characters isn't always the same?
Compare those 2:
483045022100a83ca95b6b3153c5fce971c1eebbeebc892ba6c297157c326a8359c9b408ce1902201904060ce4e1fbd455403546232779dc9ca7bfe3582d3055270f27f245575d0901410421557041f930252b79b0fa28e6587680053b3a3672ff0c1dca6a623c79bdc0b6125a7a2be5450e28e49731ba8f60231dd8eceeff170923717d97a1ca5a67acd4
47304402202a6531662b10fdc9d4b4e7ada1a4db2cdba6e0d22155ebbcedb8545a9ddfd1170220760a431d5eac0f32e8f6fc5812cc9ea5c1530eac37f11768288185bb87cba3ea01410421557041f930252b79b0fa28e6587680053b3a3672ff0c1dca6a623c79bdc0b6125a7a2be5450e28e49731ba8f60231dd8eceeff170923717d97a1ca5a67acd4
I though pubkeys should always have 65 or 33 bytes (including one for flag).