Found mistakes in the applied H1B extension petition, out of ten places the job title mentioned in the support letter three places mistakenly has incorrect job title(typo) information also the same mistake in I539 spouse sponsor job title information, is it possible to correct these mistakes by contacting USCIS or do we have to withdraw current petition and apply new one? Current I94 expiring Jan 5th 2019, is it possible to apply new H1B extension after the I94 expiry(given the mistaken H1B extension is pending with USCIS)